Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
Linux Linux — net/sched: fix pedit partial COW leading to page cache corruption
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L L N U H H H 7.8 .0053 42.3 —
AFFECTED
Product Versions Fixed
Linux abe35bf3be51482593076d516a680d79e5fbc8e1 – —
Linux 5.18 – 5.10.260
TIMELINE
May 13 Reserved by Linux
Jun 16 Published (CNA: Linux)
Aug 4 EXPLOIT PUBLISHED — CVE-2026-46331 (Linux). Public exploit reference added.
Description
In the Linux kernel, the following vulnerability has been resolved:
net/sched: fix pedit partial COW leading to page cache corruption
tcf_pedit_act() computes the COW range for skb_ensure_writable()
once before the key loop using tcfp_off_max_hint, but the hint does
not account for the runtime header offset added by typed keys. This
can leave part of the write region un-COW'd.
Fix by moving skb_ensure_writable() inside the per-key loop where
the actual write offset is known, and add overflow checking on the
offset arithmetic. For negative offsets (e.g. Ethernet header edits
at ingress), use skb_cow() to COW the headroom instead. Guard
offset_valid() against INT_MIN, where negation is undefined.
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-46331 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.